如何在UITextField上设置字符限制 [英] How to put a character limit on a UITextField

问题描述

我想对UITextField设置字符限制，但不知道如何。我希望它有最多16个字符。

I would like to put a character limit on a UITextField but don't know how. I want it to have a maximum of 16 characters in it. How do I do this.

推荐答案

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    NSUInteger newLength = [textField.text length] + [string length] - range.length;
    return (newLength > 12) ? NO : YES;
}

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